1. Characteristics of anchor impeller Firstly, the anchor impeller of agitator has the advantages.  simple structure and reliable operation, as well no blockage and easy maintenance. Secondly, the anchor impeller can meet the requirements of flocculation law. That is to say each section of flocculation process with different mixing intensity,  it can adapt to the change of water volume and water temperature. Thirdly, when the anchor impeller of agitator set with stepless speed regulati